I don't know what I could do to speed up the process...
Well, 10 seconds isn't long to wait (and it's probably significantly less on a more-modern Mac), it's just that nothing is going on during that time. Just little dots appearing or updating text (remember "reticulating splines"? <g>) or anything, really, would help. Not essential - a player probably won't even notice it after the first time - but that would prevent the "is it locked up?" issue on the first run.